i've given this opinion before. if a MDS is willing to stick their neck out and recommend you for a DBS, then do it if you can afford it and have the support group to help you thru the process, not everyone can qualify for DBS and there is a waiting list, you are in a select group of pd'ers. if you are someone who also might be a candidate for a disease reversing clinical trial then you have to consider that since a DBS might prevent you from participating. if you are surprised that your MDS is recommending a DBS when you don't think you need it, remember they have probably seen hundreds of PD'ers and they're estimating how you'll be in a few years and obviously think you'll have progressed enough to want a DBS and better to get it now when you can qualify for it rather than take a chance that your health might decline in the future and you won't qualify. imho it would be a lot easier for your MDS to just tell you to keep adding meds rather than get a DBS so when they recommend one to you they aren't doing it just for the economic gain imho, they sincerely believe you will be better off and the last thing they want is someone who isn't sure they want a DBS and/or is going to back out at the last minute, so imho if a MDS recommends a DBS, you need a DBS even though your current symptoms aren't that bad at the moment. i was diagnosed about 15 years ago by DOCTOR A (not using names), but decided to see DOCTOR B for the next 11 years. with obamacare i switched back to DR A and he suggested i add amantadine - hated it and then entacapone and finally i tried pramipaxol which i stopped but from the first meeting he said i should start considering DBS which would have a better result than increasing meds. he didn't really push me on getting a DBS, i think he walks a fine line in recommending it but not pushing too hard which might result in a patient that chickens out at the last minute.
anyway, i'd get the evaluation and find out if you qualify, i think the results are good for a year. just remember, your MDS gains nothing by recommending someone who isn't a good candidate for a DBS, there are waiting lists for DBS and just for operating rooms, it isn't like they're having to meet a quota.

fwiw, i qualified for the DBS but backed out when TRUMP won and i was afraid obamacare would be overturned so i hope i can requalify since obamacare is now secure, i still worry about not having enough support.